Home / 3,855.48-5,320.56-2,087.09

Finding the Fourth Proportional to 3,855.48, 5,320.56 and 2,087.09

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Solution

The fourth proportional to 3,855.48, 5,320.56 and 2,087.09 is: 2,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.48 : 5,320.56 = 2,087.09 : x
  2. Step 2: Convert to fraction form
    3,855.48/5,320.56 = 2,087.09/x
  3. Step 3: Cross multiply
    3,855.48x = 5,320.56 × 2,087.09
  4. Step 4: Simplify right side
    3,855.48x = 11,104,463.71
  5. Step 5: Solve for x
    x = 11,104,463.71/3,855.48
  6. Step 6: Final answer
    x = 2,880.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.